Web Animations API: Implement step-middle and steps(x, middle) timing functions.

Source/core/animation/AnimationTimingInputTest.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/animation/Animation.h"
 
 #include "bindings/v8/Dictionary.h"
 #include "core/animation/AnimationTestHelper.h"
 #include "core/animation/TimedItemTiming.h"
-#include "platform/animation/TimingFunctionTestHelper.h"
 
 #include <gtest/gtest.h>
 
 namespace WebCore {
 
 class AnimationAnimationTimingInputTest : public ::testing::Test {
 protected:
     AnimationAnimationTimingInputTest()
         : m_isolate(v8::Isolate::GetCurrent())
         , m_scope(V8BindingTestScope::create(m_isolate))
@@ skipping 127 matching lines @@
 
 TEST_F(AnimationAnimationTimingInputTest, TimingInputTimingFunction)
 {
     const RefPtr<TimingFunction> defaultTimingFunction = LinearTimingFunction::create();
 
     EXPECT_EQ(*CubicBezierTimingFunction::preset(CubicBezierTimingFunction::Ease), *applyTimingInputString("easing", "ease").timingFunction);
     EXPECT_EQ(*CubicBezierTimingFunction::preset(CubicBezierTimingFunction::EaseIn), *applyTimingInputString("easing", "ease-in").timingFunction);
     EXPECT_EQ(*CubicBezierTimingFunction::preset(CubicBezierTimingFunction::EaseOut), *applyTimingInputString("easing", "ease-out").timingFunction);
     EXPECT_EQ(*CubicBezierTimingFunction::preset(CubicBezierTimingFunction::EaseInOut), *applyTimingInputString("easing", "ease-in-out").timingFunction);
     EXPECT_EQ(*LinearTimingFunction::create(), *applyTimingInputString("easing", "linear").timingFunction);
-    EXPECT_EQ(*defaultTimingFunction, *applyTimingInputString("easing", "initial").timingFunction);
     EXPECT_EQ(*StepsTimingFunction::preset(StepsTimingFunction::Start), *applyTimingInputString("easing", "step-start").timingFunction);
+    EXPECT_EQ(*StepsTimingFunction::preset(StepsTimingFunction::Middle), *applyTimingInputString("easing", "step-middle").timingFunction);
     EXPECT_EQ(*StepsTimingFunction::preset(StepsTimingFunction::End), *applyTimingInputString("easing", "step-end").timingFunction);
     EXPECT_EQ(*CubicBezierTimingFunction::create(1, 1, 0.3, 0.3), *applyTimingInputString("easing", "cubic-bezier(1, 1, 0.3, 0.3)").timingFunction);
-    EXPECT_EQ(*StepsTimingFunction::create(3, true), *applyTimingInputString("easing", "steps(3, start)").timingFunction);
-    EXPECT_EQ(*StepsTimingFunction::create(5, false), *applyTimingInputString("easing", "steps(5, end)").timingFunction);
+    EXPECT_EQ(*StepsTimingFunction::create(3, StepsTimingFunction::StepAtStart), *applyTimingInputString("easing", "steps(3, start)").timingFunction);
+    EXPECT_EQ(*StepsTimingFunction::create(5, StepsTimingFunction::StepAtMiddle), *applyTimingInputString("easing", "steps(5, middle)").timingFunction);
+    EXPECT_EQ(*StepsTimingFunction::create(5, StepsTimingFunction::StepAtEnd), *applyTimingInputString("easing", "steps(5, end)").timingFunction);
     EXPECT_EQ(*defaultTimingFunction, *applyTimingInputString("easing", "steps(5.6, end)").timingFunction);
-    // FIXME: Step-middle not yet implemented. Change this test when it is working.
-    EXPECT_EQ(*defaultTimingFunction, *applyTimingInputString("easing", "steps(5, middle)").timingFunction);
     EXPECT_EQ(*defaultTimingFunction, *applyTimingInputString("easing", "cubic-bezier(2, 2, 0.3, 0.3)").timingFunction);
     EXPECT_EQ(*defaultTimingFunction, *applyTimingInputString("easing", "rubbish").timingFunction);
     EXPECT_EQ(*defaultTimingFunction, *applyTimingInputNumber("easing", 2).timingFunction);
+    EXPECT_EQ(*defaultTimingFunction, *applyTimingInputString("easing", "initial").timingFunction);
 }
 
 TEST_F(AnimationAnimationTimingInputTest, TimingInputEmpty)
 {
     Timing updatedTiming;
     Timing controlTiming;
 
     v8::Handle<v8::Object> timingInput = v8::Object::New(m_isolate);
     Dictionary timingInputDictionary = Dictionary(v8::Handle<v8::Value>::Cast(timingInput), m_isolate);
     populateTiming(updatedTiming, timingInputDictionary);
 
     EXPECT_EQ(controlTiming.startDelay, updatedTiming.startDelay);
     EXPECT_EQ(controlTiming.fillMode, updatedTiming.fillMode);
     EXPECT_EQ(controlTiming.iterationStart, updatedTiming.iterationStart);
     EXPECT_EQ(controlTiming.iterationCount, updatedTiming.iterationCount);
     EXPECT_TRUE(std::isnan(updatedTiming.iterationDuration));
     EXPECT_EQ(controlTiming.playbackRate, updatedTiming.playbackRate);
     EXPECT_EQ(controlTiming.direction, updatedTiming.direction);
     EXPECT_EQ(*controlTiming.timingFunction, *updatedTiming.timingFunction);
 }
 
 } // namespace WebCore